CN104080522A

CN104080522A - Filter station

Info

Publication number: CN104080522A
Application number: CN201380007524.7A
Authority: CN
Inventors: 米夏埃尔·武尔泽; 奥利弗·林格尔施泰因
Original assignee: INTEWA GmbH
Current assignee: INTEWA GmbH
Priority date: 2012-02-03
Filing date: 2013-01-31
Publication date: 2014-10-01
Anticipated expiration: 2033-01-31
Also published as: EP2809420B1; CN104080522B; WO2013113833A1; WO2013113843A1; EP2809420A1

Abstract

A filter station is described which has a first, upper connection distributor (21) and a second, lower connection distributor (22), each of which have an equal number of a plurality of correspondingly arranged connections (31, 32), of which each connection (31) of the upper connection distributor (21) and the appropriate corresponding connection (32) of the lower connection distributor (22) forms a connection pair (03) intended in each case for the connection and/or for accommodating a filter (04) such that the filter station (01) is capable of accommodating a number of filters (04) that corresponds to the number of connection pairs (03), wherein the lower connection distributor (22) has an air connection (05) and the upper connection distributor (21) has a line connection (06).

Description

Filtering station

Technical Field

The present invention relates to a filtering station for filtering water.

Background

Different filters are used when cleaning contaminated water. Furthermore, different filter construction types are known for cleaning contaminated water in a reservoir, for example in a rainwater reservoir, in a greywater reservoir or in a reservoir of a small sewage purification device. The filter must be cleaned of adhering contaminants at regular intervals to the filter of the filtering surface through which the contaminated water penetrates, for example by sucking the contaminated water through the filter of the filtering surface. This can be done by backwashing through the filter with clean water and/or by means of gas bubbles which flow over the filter medium by floating on it and detach contaminating particles. Screens or grates are used for cleaning large pollutants. So-called gas lift pumps, sewage pumps or siphon overflows are known for removing deposits. The floating pollutants can be sucked away, for example, by means of a so-called skimming overflow.

Here, in addition, the quality of the filtrate, also referred to as permeate, which is present after passing through the filter or filters depends on the type of filter construction, the filter arrangement, the filter material, also referred to as filter medium, and the cleanliness or cleanliness of the filter surfaces in connection with the filtration method.

DE 102006001034 a1 discloses a filter device with two membrane filter units, which are supplied with raw water to be filtered by means of a pump via a feed line. In the membrane filter unit, a plurality of tubular membrane filter elements are present through which raw water flows from below. Here, the raw water penetrates the walls of the membrane filter element in order to trap impurities of the raw water. The filtered raw water is delivered to a purified water pipeline as purified water. The air compressor introduces compressed air into raw water through a compressed air pipe when the filter is operated. In order to be able to carry out a backflushing operation in the filter device for cleaning the membrane filter unit, a shut-off valve is provided between the collecting line connected to the membrane filter unit and the clean water line, which shut-off valve is closed during the backflushing operation.

Disclosure of Invention

The invention is based on the object of creating a filter station for filtering water which can be used for almost any large water quantity and is adapted to any water treatment quantity in this case, and which has at least one design with improved cleaning effect, so that the filter station can at least provide as sterile water as possible.

The object is achieved by the features of the independent claims.

Further advantageous embodiments are described in the dependent claims.

A filter station is therefore provided which comprises two port distributors, namely a lower port distributor and an upper port distributor, each having the same number of ports which are arranged in a matched manner. The interfaces can be arranged symmetrically on the interface distributor. The interface distributor at the lower part and the interface distributor at the upper part are respectively provided with the same number of interfaces. Preferably, six interfaces each are provided, but alternatively two, three, four or any other equal number of interfaces may be located on the interface distributor. The interfaces of the upper interface distributor which cooperate with the interfaces of the lower interface distributor form an interface pair. Each interface pair is intended to accommodate a filter, so that the filter station can accommodate a plurality of filters corresponding in number to the number of interface pairs when the upper and lower interface distributors each have two or more interfaces and are thus provided with two or more interface pairs.

The lower interface distributor has an air interface for connection to an air source, for example to a blower and/or a compressed air source. The upper interface distributor has a pipe interface for connection to a pump.

With the described construction, the filtering station can be simply scaled in the following way: more or fewer interface pairs can be equipped with filters depending on the amount of water treatment required. The total filter surface of the filter station, which is decisive for the water treatment to be achieved, is composed of the sum of the individual filter surfaces of the individual filters which are each installed in the filter station between a port pair.

If the filter station has, for example, six mouthpiece pairs each consisting of six mouthpieces on the upper mouthpiece distributor and six mouthpieces on the lower mouthpiece distributor, which are arranged in a manner matched to one another, the filter station can be equipped with up to six individual filters and, if appropriate, different blowers, depending on the required water throughput. In the case of higher water demands, a plurality of filter stations can be operated in parallel. The advantage resulting in addition to scalability is that the redundant configuration of a plurality of filter stations leads to a particularly high operational reliability in larger systems.

The first upper interface distributor and the second lower interface distributor can be connected to each other by a central tube extending along the longitudinal axis of the filtration station.

The air connection of the second lower port distributor can be provided on the central tube and/or the central tube can be connected to the air connection on the second lower port distributor and has an air inlet connection for connection to an air source. Preferably, the central tube is fastened to the first upper port distributor in such a way that no flow connection is formed between the first upper port distributor and the second lower port distributor via the central tube.

The filter station can provide a common connection of the one or more filters connected in each case to the interface pair to the first upper interface distributor, wherein at least the first upper interface distributor is preferably connected via its line interface to at least one line and one or more pumps, via which the filtrate or permeate flows off during the operation of the filters, and via which the return flow of the filtrate is guided during the cleaning process at least to the first upper interface distributor and to the one or more filters connected between the interfaces of the first upper interface distributor and the second lower interface distributor.

Alternatively or additionally, the filter station can be provided with one or more additional common connecting devices which are each connected to a filter of the port pair and to a second, lower port distributor, wherein at least the second, lower port distributor is provided as an air distributor. In this case, the at least second lower interface distributor is preferably operatively connected via its air interface to the air source, preferably to the compressed air source and/or to the at least one blower, for example by bringing the at least second lower interface distributor into communication with the air source (preferably with the compressed air source and/or the at least one blower) at least temporarily, for example during a cleaning process. Thereby, the one or more filters can be loaded with the return flow of filtrate and air at the same time, in particular during the cleaning process, at least via the second, lower interface distributor. In this way, a filter medium formed, for example, by fibers can be freed from deposits and/or the filtration process can be carried out more completely.

The lower and upper port distributors are preferably arranged in a ring around the longitudinal axis of the filter station. In this case, the interface distributors can each be represented as a ring. This results in a particularly compact construction, wherein the filters can all be arranged around the longitudinal axis of the filter station parallel to said longitudinal axis.

Preferably, one or more submersible pumps are provided on the pipe connection above the upper connection distributor.

Additionally, a reservoir can be placed on one or both submersible pumps.

The filter station is particularly preferably characterized by a container which is in communication with the first upper port distributor and through which the filtrate or permeate flows during the filter operation, said container ensuring a volume compensation during the cleaning process in the event of a backflow or return flow.

At least one filter to be introduced or already introduced between the interface pair can implement a membrane filter. For example, membrane filter technology is becoming increasingly important when cleaning waste water. Ultrafiltration and microfiltration can be carried out with the aid of membrane filters, in which particles, colloids and macromolecules are removed or retained in the retentate and do not reach the permeate, so that the waste water can be sterilized in the manner described.

Drawings

Embodiments of the present invention and its advantages are explained in detail below with reference to the attached drawings. In which like reference numerals designate identical or functionally similar elements. For the sake of overview, in the individual figures, only the reference numerals are shown, which are necessary for describing the respective figure. The dimensional relationships of the individual elements in the figures do not always correspond to the actual dimensional relationships, since some shapes are shown in a simplified manner and other shapes are shown enlarged in relation to other elements for better illustration. Shown in a schematic view:

figure 1 shows a side view of a first embodiment of a filtering station,

figure 2 shows a side view of a second embodiment of the filtering station,

fig. 3 shows a top view of a third embodiment of the filter station viewed along its longitudinal axis.

Detailed Description

The filtering station 01, shown in full or in part in fig. 1, 2 and 3, comprises a first upper interface distributor 21 and a second lower interface distributor 22. Each of the interface distributors is provided with a plurality of interfaces 31, 32, respectively, which are arranged in a matching manner in the same number. Of these interfaces 31, 32, in each case one interface 31 of the upper interface distributor 21 and the corresponding mating interface 32 of the lower interface distributor 22 form an interface pair 03 which is provided for connection or for receiving in each case one filter 04. Thus, when the upper and lower interface distributors 21, 22 have two or more interfaces 31, 32, respectively, and are provided with two or more interface pairs 03, the filter station 01 can accommodate a number of filters 04 corresponding to the number of interface pairs 03 thereof.

In the filter station 01 shown in fig. 3, for example, six port pairs 03, each consisting of one port 31 on the upper port distributor 21 and a mating port 32 on the lower port distributor 22, are provided for receiving at most six filters 04.

The lower interface distributor 22 has an air interface 05 for connection to an air source, for example a compressed air source or a blower, and the upper interface distributor 21 has a line interface 06 for connection to lines for discharging filtrate during operation of the filter, for example suction lines and/or one or more pumps 71, 72.

The filter station 01 preferably has the common connection arrangement of the one or more filters 04, which are each connected to the port pair 03, to the first upper port distributor 21, so that at least the first upper port distributor 21 is preferably connected via its line port 06 to at least one line, via which the filtrate or permeate flows off during operation of the filter, and one or more pumps 71, 72, via which the return flow of the filtrate is guided during the cleaning process at least to the first upper port distributor 21 and to the one or more filters 04 connected to the port pair 03 formed by the mating ports 31, 32 of the first upper port distributor 21 and of the second lower port distributor 22.

Alternatively or additionally, the filter station 01 preferably has a common connection of the one or more filters 04, which are each connected to the mouthpiece pair 03, to the second lower mouthpiece distributor 22, so that at least the second lower mouthpiece distributor 22 serves as an air distributor, wherein the at least second lower mouthpiece distributor 22 is preferably at least temporarily in communication with an air source, preferably with a compressed air source and/or at least one blower, for example during a cleaning process, via its air interface 05. The filter 04 connected to the one or more port pairs 03 formed by the mating ports 31, 32 of the first upper port distributor 21 and the second lower port distributor 22 is thereby loaded with the return flow of filtrate and air at least via the lower second port distributor 22, in particular at least during the cleaning process, preferably simultaneously.

The first upper interface distributor 21 and the second lower interface distributor 22 can be connected to each other by a central tube 11 extending along the longitudinal axis 10 of the filter station 01 (fig. 2). In this case, the air connection 05 of the second lower interface distributor 22 can be provided on the central tube 11 and/or the central tube 11 can be connected to the air connection 05 on the second lower interface distributor 22 and has an air inlet connection 12 for connection to an air source. The optionally provided central tube 11 can be fastened, for example, to the first upper port distributor 21 in such a way that no flow connection is formed between the first upper port distributor 21 and the second lower port distributor 22 via the central tube 11.

The mouth 31 of the upper mouth distributor 21 and the mouth 32 of the lower mouth distributor 22 can be arranged in a ring-like manner around the longitudinal axis 10 of the filter station 01, as shown in fig. 3. In this case, the interface distributors 21, 22 can each be represented as a ring. A particularly compact construction is thereby obtained, wherein the filters 04 can all be arranged parallel to the longitudinal axis 10 of the filter station 01 about said longitudinal axis.

The filter station 01 shown in fig. 3 has, for example, six port pairs 03 each formed from six ports 31 on the upper port distributor 21 and six ports 32 on the lower port distributor 22, which are arranged in a manner matched to one another. The filter station 01 can thus be equipped with up to six individual filters 04 and possibly different blowers, depending on the required water throughput. In the case of higher water requirements, a plurality of filter stations 01 can be operated in parallel.

In principle, any arbitrary number of interface pairs 03 can of course be considered, wherein the selected number of six interface pairs 03 allows the advantage of a particularly compact arrangement of a plurality of filter stations 01 in a honeycomb fashion, wherein the interface distributors 21, 22 are formed in a ring shape.

One or more pumps, preferably embodied as submersible pumps 71, 72, can be connected to the line connection 06 above the first upper connection distributor 21. Above one or both submersible pumps 71, 72, a container, preferably as a backwash container 08, can be arranged.

It is important to underline that, independently of the presence of one or two or more submersible pumps 71, 72, a backwash container 08 can be provided which communicates at least with the first upper port distributor 22 and through which filtrate or permeate can flow during filter operation, said backwash container ensuring volume compensation during the cleaning process in the event of a return flow or return flow.

For a particularly thorough filtration, at least one filter 04 to be introduced or already introduced between the port pair 03 is implemented as a membrane filter.

The filtration station 01 shown in fig. 1, 2 and 3 can be equipped with, for example, up to six filters 04, for example in the form of swirl (kartuschenfoermig) membrane filters. The filtration station is preferably vertically placed in a reservoir containing the water to be cleaned, for example a water tank, and is fixed to a permeate hose connected to one or more pumps 71, 72. The permeate hose forms a conduit connected to the conduit interface 06. Depending on the number of filters 04 installed, the filter station 01 is provided with a weight 09, which serves as a counterweight against buoyancy, whereby the filter station does not float up when a source of air, for example a blower, is connected. The at least one pump 71, 72 sucks in water which, due to the preferably symmetrical arrangement of the at least one port 31 on the upper port distributor 21, has passed through the filter 04 uniformly during operation of the filter and conveys it through the permeate hose into the fresh water container. The length of the permeate hose can be adapted to the geometry of the water reservoir, for example up to a height of 3 m.

In order to ensure a high throughput and a long service life of the filter 04 for a long time, the filter 04 of the filter station 01 can be cleaned periodically, preferably automatically. For this purpose, the filter 04 used is flushed back at regular intervals by at least one pump 71, 72, which is installed, for example. The filter station receives the required backwash volume from a backwash container 08, which is located above at least one pump 71, 72 arranged on the pipe connection 06. Furthermore, the filter 04 is periodically flowed through by air in order to protect the filter medium, which is formed, for example, by fibers, against sedimentation. For this purpose, the filter station 01 has an air connection to which an air source, for example a compressed air source and/or a blower, is connected. The air is distributed uniformly over the connected filter via the second, lower interface distributor 22, which acts as an air distributor, with the likewise symmetrical interface 32.

In larger water treatment plants, a plurality of filter stations 01 can be connected in parallel.

If a plurality of filters 04 are connected to a single air source, for example to a single blower, it is particularly important that the filters 04 are uniformly charged with air. Systems are known which ensure this by cross-sectional adaptation in the case of a plurality of filters connected in series with one another.

In the filter station 01 shown in fig. 1, 2 and 3, however, a uniform air distribution is achieved via the lower port distributor 22 with the preferably symmetrically arranged ports 32. Particularly advantageously, the mouthpiece distributor 22 can be flexibly equipped with a plurality of filters 04 depending on the number and arrangement of the mouthpieces 32 and a uniform distribution of the incoming air is achieved at any time.

On the filtrate suction side, an upper port distributor 21 can be provided, which is in principle of the same design as the lower port distributor 22 and which can be arranged, for example, only upside down (umgedreht), i.e. beyond the head (uber Kopf), compared to the lower port distributor 22. In this case, when the filter station 01 is differently equipped with filters 04, the suction is also performed by means of a uniform underpressure of the filtrate from all connected filters 04, since the connections 31, 32 are particularly advantageously arranged symmetrically on the connection distributors 21, 22 in order to ensure a uniform air supply and/or filtrate suction.

In the filter station 01 shown in fig. 1, 2 and 3, filtrate can be sucked in by means of a submersible pump 72 and, if the submersible pump can also be operated in the other direction, back-flushed by means of the same submersible pump 72 or by means of a further submersible pump 71 which is fed back through the first submersible pump 72 in the opposite direction. The required amount of back flushing is thereby pushed out of the pipe connected to the pipe connection 06. If the pipe does not contain sufficient water, it is provided with a backflushing container 8 through which the flow passes in order to increase the volume.

Two pumps, which are preferably embodied as submersible pumps 71, 72, can be arranged here in series or in parallel with one another.

Due to its geometry and its compact design, the described filter station 01 can be installed in almost every water reservoir, for example, via its inlet opening, from which it can deliver filtered water, for example, into a further fresh water reservoir, preferably in the case of a ring-shaped interface distributor 21, 22 and advantageously in the case of six interface pairs 03.

The filter station 1 can be used, for example, in greywater cleaning.

It is important to emphasize that the filter station allows particularly simple production, since it is composed of standardized components, such as, for example, correspondingly symmetrically configured connectors for connecting the filter 04 to the interface pair, on the one hand, and can be composed of components that can be configured partially identically, on the other hand. Thus, for example, the interface distributors 21, 22 can have the same interface dimensions and arrangement, whereby they can be produced in batches in a simplified manner, simplifying stock control and avoiding assembly errors that would otherwise occur frequently due to the use of similar, but nevertheless different components.

The invention has been described with reference to the preferred embodiments. However, it is conceivable for a person skilled in the art to modify or adapt the invention without thereby departing from the scope of protection of the following claims.

The invention can be used, for example, commercially to manufacture and operate devices for water filtration and/or water treatment.

List of reference numerals

01 Filter station

03 interface pair

04 Filter

05 air interface

06 pipeline joint

08 back flushing container

09 heavy object

10 longitudinal axis

11 center tube

12 air inlet connecting pipe

21 upper interface distributor

22 lower part of the interface distributor

31 (on top interface distributor)

32 (on lower interface distributor) interface

71 Pump

72 pump

The claims (modification according to treaty clause 19)

1. A filter station (01) comprising a first upper interface distributor (21) and a second lower interface distributor (22) each having a same number of a plurality of cooperatively arranged interfaces (31, 32), wherein each one interface (31) of the upper interface distributor (21) and the corresponding cooperatively arranged interface (32) of the lower interface distributor (22) each form an interface pair (03) which is set up for connecting or for accommodating each one filter (04), such that the filter station (01) can accommodate a number of filters (04) corresponding to the number of interface pairs (03), wherein the lower interface distributor (22) has an air interface (05) and the upper interface distributor (21) has a pipe interface (06),

wherein,

-the first upper interface distributor (21) and the second lower interface distributor (22) are connected to each other by a central tube (11) extending along the longitudinal axis (10) of the filtering station (01), and

-no flow connection is formed between the first upper interface distributor (21) and the second lower interface distributor (22) via the central tube (11),

-the filtering station (01) is placed in a reservoir containing the water to be cleaned and is fixed on a pipe connected to the pipe connection (06), and

-the filter (04) is periodically flown through by air in order to protect the filter medium from settling, for which purpose,

-an air source is connected to the air interface (05), and

-air is distributed evenly over the connected filter (04) via the interface distributor (22) of the second lower part functioning as an air distributor.

2. The filtering station according to claim 1, wherein the air interface (05) is provided on the central tube (11).

3. Filtration station according to one of the preceding claims, wherein at least the first upper interface distributor (21) is connected via its pipe interface (06) with at least one pipe and one or more pumps (71, 72), via which preferably one pipe filtrate flows out during filter operation, and via which preferably one pipe a return flow of filtrate is directed during a cleaning process at least to the first upper interface distributor (21) and to one or more filters (04) connected to the interface pair (03).

4. The filter station according to one of the preceding claims, wherein at least the second lower interface distributor (22) serves as an air distributor, wherein at least the second lower interface distributor (22) is at least temporarily in communication with an air source via its air interface (05), and one or more filters (04) connected to the interface pair (03) are preferably loaded with air at least during a cleaning process via the second lower interface distributor (22).

5. Filtration station according to one of the preceding claims, wherein the mouthpiece (31) of the upper mouthpiece distributor (21) and the mouthpiece (32) of the lower mouthpiece distributor (22) are arranged annularly around the longitudinal axis (10) of the filtration station (01).

6. Filtration station according to one of the preceding claims, wherein one or more submersible pumps (71, 72) are provided on the pipe interface (06) above the first upper interface distributor (21).

7. A filtration station according to claim 6, wherein a container (08) is positioned above one or both of the submersible pumps (71, 72).

8. Filtration station according to one of the preceding claims, wherein a backwash container (08) is provided which communicates at least with the first upper interface distributor (22) and through which filtrate flows during filter operation, said backwash container ensuring volume compensation during the cleaning process in the event of backflow.

9. The filtration station of one of the preceding claims, wherein at least one filter (04) introduced between the interface pair (03) implements a membrane filter.

10. Filtration station according to one of the preceding claims, wherein six interface pairs (03) are provided for accommodating at most six filters (04).

11. Filtration station according to one of the preceding claims, wherein the interfaces (31, 32) are symmetrically arranged on the interface distributors (21, 22).

Claims

1. A filtration station (01) comprising a first upper interface distributor (21) and a second lower interface distributor (22), the upper interface distributor and the lower interface distributor respectively have a plurality of interfaces (31, 32) which are matched and arranged in the same number, wherein each interface (31) of the upper interface distributor (21) and the corresponding mating interface (32) of the lower interface distributor (22) form an interface pair (03) provided for connecting or receiving each filter (04), such that the filter station (01) can accommodate a number of filters (04) corresponding to the number of interface pairs (03), wherein the lower port distributor (22) has an air port (05) and the upper port distributor (21) has a pipe port (06).

2. The filtering station according to claim 1, wherein the first upper interface distributor (21) and the second lower interface distributor (22) are connected to each other by a central tube (11) extending along the longitudinal axis (10) of the filtering station (01).

3. The filtering station according to claim 2, wherein the air interface (05) is provided on the central tube (11).

4. A filtering station according to claim 2 or 3, wherein no flow connection is formed between the first upper interface distributor (21) and the second lower interface distributor (22) via the central tube (11).

5. Filtration station according to one of the preceding claims, wherein at least the first upper interface distributor (21) is connected via its pipe interface (06) with at least one pipe and one or more pumps (71, 72), via which preferably one pipe filtrate flows out during filter operation, and via which preferably one pipe a return flow of filtrate is directed during a cleaning process at least to the first upper interface distributor (21) and to one or more filters (04) connected to the interface pair (03).

6. The filter station according to one of the preceding claims, wherein at least the second lower interface distributor (22) serves as an air distributor, wherein at least the second lower interface distributor (22) is at least temporarily in communication with an air source via its air interface (05), and one or more filters (04) connected to the interface pair (03) are preferably loaded with air at least during a cleaning process via the second lower interface distributor (22).

7. Filtration station according to one of the preceding claims, wherein the mouthpiece (31) of the upper mouthpiece distributor (21) and the mouthpiece (32) of the lower mouthpiece distributor (22) are arranged annularly around the longitudinal axis (10) of the filtration station (01).

8. Filtration station according to one of the preceding claims, wherein one or more submersible pumps (71, 72) are provided on the pipe interface (06) above the first upper interface distributor (21).

9. Filtration station according to claim 8, wherein a container (08) is placed above one or both of the submersible pumps (71, 72).

10. Filtration station according to one of the preceding claims, wherein a backwash container (08) is provided which communicates at least with the first upper interface distributor (22) and through which filtrate flows during filter operation, said backwash container ensuring volume compensation during the cleaning process in the event of backflow.

11. The filtration station of one of the preceding claims, wherein at least one filter (04) introduced between the interface pair (03) implements a membrane filter.

12. Filtration station according to one of the preceding claims, wherein six interface pairs (03) are provided for accommodating at most six filters (04).

13. Filtration station according to one of the preceding claims, wherein the interfaces (31, 32) are symmetrically arranged on the interface distributors (21, 22).